"As the world's most popular fundraising website, we do attract fraudulent donors looking to test the validity of stolen cards, just as Ebay and Amazon have to deal with fraudulent purchase attempts,” the company said in a statement. “However, our payment processors provide a number of safeguards which allows them to cancel those donations very quickly.

“In the case of the Team Sheba campaign, our payment processors caught the fraudulent donations early and were able to remove them all from the campaign. Our team is continuing to monitor the situation closely to make sure this issue does not continue."

Felines & Canines worries the fundraising difficulties will have a negative impact because the shelter relies on crowdfunding for survival and doesn’t want donors to lose trust in the campaign.